Composition of Certain Financial Statement Captions - Summary of Other Current and Noncurrent Liabilities (Details) - USD ($) $ in Thousands	Jun. 30, 2018	Mar. 31, 2018
Other Liabilities [Abstract]
Accrued securities litigation settlement	$ 19,000	$ 19,000
Sales return reserves and other customer liabilities	8,658
Care services liabilities	7,520	2,373
Customer credit balances and deposits	3,272	4,287
Accrued consulting and outside services	2,536	4,428
Accrued employee benefits and withholdings	2,446	1,636
Accrued self insurance expense	2,354	2,145
Accrued EDI expense	2,274	2,310
Accrued outsourcing costs	1,964	2,898
Deferred rent	1,445	1,594
Accrued legal expense	1,390	1,793
Accrued hosting costs	1,307	1,600
Accrued royalties	779	1,400
Remaining lease obligations	633	672
Sales tax payable	569	499
Other accrued expenses	5,920	1,682
Other current liabilities	62,067	48,317
Deferred rent	9,663	9,902
Uncertain tax positions	2,527	2,419
Remaining lease obligations	827	962
Other liabilities	215	211
Other noncurrent liabilities	$ 13,232	$ 13,494